Regarding samples (such as air in the station site, seawater around the 
station) taken daily in Fukushima Daiichi Nuclear Power Station, we have 
carried out nuclide analysis, determining the radiation dose of the three 
main nuclides*, and reported the prompt results to Nuclear and Industry 
Safety Agency (NISA) of the Ministry of Economy, Trade and Industry (METI), 
as well as the Fukushima Prefecture. 
Also, with regard to nuclide analysis results on the main three nuclides 
and other nuclides, we reevaluate and compile as final results, and report 
them to NISA of METI and the Fukushima Prefecture.
                      (previously announced on April 4 and April 20, 2011)
 
We reevaluated the nuclide analysis results on the samples (September 16 - 
30) taken from air in the station site, seawater / marine soil around the 
station, seawater around the intake of Unit 1 to 4, sub-drain water around 
the turbine buildings, sub-drain water around the Centralized Radiation 
Waste Treatment Facility, and seawater offshore of Ibaraki and Miyagi 
Prefectures. Today we reported the final results to NISA of METI and the 
Fukushima Prefecture. 
 
We will also reevaluate and report nuclide analysis results on air in the 
station site, seawater around the station, etc. taken on and after October 
1.
 
*the main three nuclides are Iodine-131, Cesium-134, Cesium-137 

Attachment: [Definite Report] Nuclide Analysis Results of Radioactive 
            Materials in the Air at the Sites of Fukushima Nuclear Power 
            Stations (PDF 379KB)